Hi, There is something funny with NFS mounts and DNS that isn't really documented anywere that I can find. Firstly, when mounting the server tries a reverse DNS lookup on the client. It also does a forward check. I've had strange issues where I couldn't mount unless there were certain entries in /etc/hosts but that's been fixed. It may be some paranoid check in the NFS server... Hope that helps, On Mon, Aug 30, 2004 at 08:25:53AM +0530, Dinil Divakaran wrote: > Hi All > > We are having a LAN in which a machine, say A, exports > some of its directories to few other machines in the > lab. This worked fine until the nameservers went down. > We have two name servers and both of them went down > yesterday. After this, the machine A is not able to export > its directories. When I give 'exportfs -r', its hanging > on that. When I did a strace, I found that it was trying > to contact the name server. > > Now, the interesting point is that all the systems that > is exporting files from machine A, is in the LAN itself > and is reachable (ping) from machine A; and the entry in > /etc/exports only has the IP address. In such a case, why > does the machine A try to contact the name servers, since > it already knows that these systems are in the same LAN ? > Why does it try to do a name lookup when the entries in > the exports file are IPs; and not hostnames ? > > Can someone explain ? > > Cheers, > Dinil > > - > : send the line "unsubscribe linux-net" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/ > Patent. n. Genius is 5% inspiration and 95% perspiration. A patent is a > tool for doing 5% of the work and then sitting around waiting for someone > else to do the other 95% so you can sue them.
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